{
"@context": "https://schema.org",
"@graph": [
{
"@type": "MedicalWebPage",
"name": "Virus du SRAS : Questions médicales les plus fréquentes",
"headline": "Virus du SRAS : Comprendre les symptômes, diagnostics et traitements",
"description": "Guide complet et accessible sur les Virus du SRAS : explications, diagnostics, traitements et prévention. Information médicale validée destinée aux patients.",
"datePublished": "2024-05-12",
"dateModified": "2025-05-07",
"inLanguage": "fr",
"medicalAudience": [
{
"@type": "MedicalAudience",
"name": "Grand public",
"audienceType": "Patient",
"healthCondition": {
"@type": "MedicalCondition",
"name": "Virus du SRAS"
},
"suggestedMinAge": 18,
"suggestedGender": "unisex"
},
{
"@type": "MedicalAudience",
"name": "Médecins",
"audienceType": "Physician",
"geographicArea": {
"@type": "AdministrativeArea",
"name": "France"
}
},
{
"@type": "MedicalAudience",
"name": "Chercheurs",
"audienceType": "Researcher",
"geographicArea": {
"@type": "AdministrativeArea",
"name": "International"
}
}
],
"reviewedBy": {
"@type": "Person",
"name": "Dr Olivier Menir",
"jobTitle": "Expert en Médecine",
"description": "Expert en Médecine, Optimisation des Parcours de Soins et Révision Médicale",
"url": "/static/pages/docteur-olivier-menir.html",
"alumniOf": {
"@type": "EducationalOrganization",
"name": "Université Paris Descartes"
}
},
"isPartOf": {
"@type": "MedicalWebPage",
"name": "Betacoronavirus",
"url": "https://questionsmedicales.fr/mesh/D000073640",
"about": {
"@type": "MedicalCondition",
"name": "Betacoronavirus",
"code": {
"@type": "MedicalCode",
"code": "D000073640",
"codingSystem": "MeSH"
},
"identifier": {
"@type": "PropertyValue",
"propertyID": "MeSH Tree",
"value": "B04.820.578.500.540.150.113"
}
}
},
"hasPart": [
{
"@type": "MedicalWebPage",
"name": "SARS-CoV-2",
"alternateName": "SARS-CoV-2",
"url": "https://questionsmedicales.fr/mesh/D000086402",
"about": {
"@type": "MedicalCondition",
"name": "SARS-CoV-2",
"code": {
"@type": "MedicalCode",
"code": "D000086402",
"codingSystem": "MeSH"
},
"identifier": {
"@type": "PropertyValue",
"propertyID": "MeSH Tree",
"value": "B04.820.578.500.540.150.113.937.500"
}
}
}
],
"about": {
"@type": "MedicalCondition",
"name": "Virus du SRAS",
"alternateName": "Severe acute respiratory syndrome-related coronavirus",
"code": {
"@type": "MedicalCode",
"code": "D045473",
"codingSystem": "MeSH"
}
},
"author": [
{
"@type": "Person",
"name": "Matthew P Cheng",
"url": "https://questionsmedicales.fr/author/Matthew%20P%20Cheng",
"affiliation": {
"@type": "Organization",
"name": "McGill University Health Centre and McGill Interdisciplinary Initiative in Infection and Immunity, Montreal, Quebec, Canada (M.P.C.)."
}
},
{
"@type": "Person",
"name": "Cedric P Yansouni",
"url": "https://questionsmedicales.fr/author/Cedric%20P%20Yansouni",
"affiliation": {
"@type": "Organization",
"name": "McGill University Health Centre, McGill Interdisciplinary Initiative in Infection and Immunity, and J.D. MacLean Centre for Tropical Diseases, McGill University, Montreal, Quebec, Canada (C.P.Y., M.S., M.L.)."
}
},
{
"@type": "Person",
"name": "Michaël Desjardins",
"url": "https://questionsmedicales.fr/author/Micha%C3%ABl%20Desjardins",
"affiliation": {
"@type": "Organization",
"name": "Brigham and Women's Hospital, Boston, Massachusetts, and Centre Hospitalier de l'Université de Montréal, Montreal, Quebec, Canada (M.D.)."
}
},
{
"@type": "Person",
"name": "Sanjat Kanjilal",
"url": "https://questionsmedicales.fr/author/Sanjat%20Kanjilal",
"affiliation": {
"@type": "Organization",
"name": "Brigham and Women's Hospital and Harvard Medical School & Harvard Pilgrim Healthcare Institute, Boston, Massachusetts (S.K.)."
}
},
{
"@type": "Person",
"name": "Caroline Quach",
"url": "https://questionsmedicales.fr/author/Caroline%20Quach",
"affiliation": {
"@type": "Organization",
"name": "CHU Sainte-Justine, Université de Montréal, Montreal, Canada (C.Q.)."
}
}
],
"citation": [
{
"@type": "ScholarlyArticle",
"name": "Challenges of Applying Automated Polysomnography Scoring at Scale.",
"datePublished": "2023-06-15",
"url": "https://questionsmedicales.fr/article/37532369",
"identifier": {
"@type": "PropertyValue",
"propertyID": "DOI",
"value": "10.1016/j.jsmc.2023.05.002"
}
},
{
"@type": "ScholarlyArticle",
"name": "Impact of sleep chronotype on in-laboratory polysomnography parameters.",
"datePublished": "2023-05-07",
"url": "https://questionsmedicales.fr/article/37150591",
"identifier": {
"@type": "PropertyValue",
"propertyID": "DOI",
"value": "10.1111/jsr.13922"
}
},
{
"@type": "ScholarlyArticle",
"name": "Evaluation of polysomnography findings in children with genetic skeletal disorders.",
"datePublished": "2023-05-01",
"url": "https://questionsmedicales.fr/article/37128177",
"identifier": {
"@type": "PropertyValue",
"propertyID": "DOI",
"value": "10.1111/jsr.13914"
}
},
{
"@type": "ScholarlyArticle",
"name": "The importance and limitations of polysomnography in insomnia disorder-a critical appraisal.",
"datePublished": "2023-09-07",
"url": "https://questionsmedicales.fr/article/37680011",
"identifier": {
"@type": "PropertyValue",
"propertyID": "DOI",
"value": "10.1111/jsr.14036"
}
},
{
"@type": "ScholarlyArticle",
"name": "Sleep disorders and polysomnography findings in patients with autoimmune encephalitis.",
"datePublished": "2022-12-01",
"url": "https://questionsmedicales.fr/article/36454441",
"identifier": {
"@type": "PropertyValue",
"propertyID": "DOI",
"value": "10.1007/s10072-022-06513-x"
}
}
],
"breadcrumb": {
"@type": "BreadcrumbList",
"itemListElement": [
{
"@type": "ListItem",
"position": 1,
"name": "questionsmedicales.fr",
"item": "https://questionsmedicales.fr"
},
{
"@type": "ListItem",
"position": 2,
"name": "Virus",
"item": "https://questionsmedicales.fr/mesh/D014780"
},
{
"@type": "ListItem",
"position": 3,
"name": "Virus à ARN",
"item": "https://questionsmedicales.fr/mesh/D012328"
},
{
"@type": "ListItem",
"position": 4,
"name": "Virus à ARN à brin positif",
"item": "https://questionsmedicales.fr/mesh/D000085102"
},
{
"@type": "ListItem",
"position": 5,
"name": "Nidovirales",
"item": "https://questionsmedicales.fr/mesh/D028381"
},
{
"@type": "ListItem",
"position": 6,
"name": "Coronaviridae",
"item": "https://questionsmedicales.fr/mesh/D003332"
},
{
"@type": "ListItem",
"position": 7,
"name": "Coronavirus",
"item": "https://questionsmedicales.fr/mesh/D017934"
},
{
"@type": "ListItem",
"position": 8,
"name": "Betacoronavirus",
"item": "https://questionsmedicales.fr/mesh/D000073640"
},
{
"@type": "ListItem",
"position": 9,
"name": "Virus du SRAS",
"item": "https://questionsmedicales.fr/mesh/D045473"
}
]
}
},
{
"@type": "MedicalWebPage",
"name": "Article complet : Virus du SRAS - Questions et réponses",
"headline": "Questions et réponses médicales fréquentes sur Virus du SRAS",
"description": "Une compilation de questions et réponses structurées, validées par des experts médicaux.",
"datePublished": "2025-05-17",
"inLanguage": "fr",
"hasPart": [
{
"@type": "MedicalWebPage",
"name": "Diagnostic",
"headline": "Diagnostic sur Virus du SRAS",
"description": "Comment le SRAS est-il diagnostiqué ?\nQuels tests sont utilisés pour le SRAS ?\nLe SRAS peut-il être confondu avec d'autres maladies ?\nQuels symptômes indiquent un test pour le SRAS ?\nLes radiographies sont-elles utiles pour le SRAS ?",
"url": "https://questionsmedicales.fr/mesh/D045473?mesh_terms=Polysomnography#section-diagnostic"
},
{
"@type": "MedicalWebPage",
"name": "Symptômes",
"headline": "Symptômes sur Virus du SRAS",
"description": "Quels sont les symptômes courants du SRAS ?\nLe SRAS provoque-t-il des complications respiratoires ?\nLes symptômes du SRAS apparaissent-ils rapidement ?\nY a-t-il des symptômes gastro-intestinaux associés ?\nLes symptômes varient-ils d'une personne à l'autre ?",
"url": "https://questionsmedicales.fr/mesh/D045473?mesh_terms=Polysomnography#section-symptômes"
},
{
"@type": "MedicalWebPage",
"name": "Prévention",
"headline": "Prévention sur Virus du SRAS",
"description": "Comment prévenir la transmission du SRAS ?\nLes vaccins contre le SRAS existent-ils ?\nQuelles mesures de quarantaine sont recommandées ?\nLes voyages vers des zones à risque doivent-ils être évités ?\nLes établissements de santé doivent-ils être préparés ?",
"url": "https://questionsmedicales.fr/mesh/D045473?mesh_terms=Polysomnography#section-prévention"
},
{
"@type": "MedicalWebPage",
"name": "Traitements",
"headline": "Traitements sur Virus du SRAS",
"description": "Quel est le traitement principal du SRAS ?\nLes antibiotiques sont-ils efficaces contre le SRAS ?\nLe traitement préventif est-il disponible pour le SRAS ?\nLes corticostéroïdes sont-ils utilisés pour le SRAS ?\nLe soutien respiratoire est-il crucial ?",
"url": "https://questionsmedicales.fr/mesh/D045473?mesh_terms=Polysomnography#section-traitements"
},
{
"@type": "MedicalWebPage",
"name": "Complications",
"headline": "Complications sur Virus du SRAS",
"description": "Quelles sont les complications possibles du SRAS ?\nLe SRAS peut-il entraîner des séquelles à long terme ?\nLes complications sont-elles plus fréquentes chez certains groupes ?\nLe SRAS peut-il causer des problèmes cardiaques ?\nLes complications neurologiques sont-elles possibles ?",
"url": "https://questionsmedicales.fr/mesh/D045473?mesh_terms=Polysomnography#section-complications"
},
{
"@type": "MedicalWebPage",
"name": "Facteurs de risque",
"headline": "Facteurs de risque sur Virus du SRAS",
"description": "Qui est le plus à risque de développer le SRAS ?\nLes travailleurs de la santé sont-ils plus exposés ?\nLes voyages dans des zones à risque augmentent-ils le risque ?\nLes personnes immunodéprimées sont-elles plus vulnérables ?\nLe contact avec des animaux infectés est-il un facteur de risque ?",
"url": "https://questionsmedicales.fr/mesh/D045473?mesh_terms=Polysomnography#section-facteurs de risque"
}
]
},
{
"@type": "FAQPage",
"mainEntity": [
{
"@type": "Question",
"name": "Comment le SRAS est-il diagnostiqué ?",
"position": 1,
"acceptedAnswer": {
"@type": "Answer",
"text": "Le diagnostic repose sur des tests PCR, des cultures virales et des analyses sérologiques."
}
},
{
"@type": "Question",
"name": "Quels tests sont utilisés pour le SRAS ?",
"position": 2,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les tests PCR et les tests sérologiques sont couramment utilisés pour détecter le virus."
}
},
{
"@type": "Question",
"name": "Le SRAS peut-il être confondu avec d'autres maladies ?",
"position": 3,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, il peut être confondu avec la grippe ou d'autres infections respiratoires."
}
},
{
"@type": "Question",
"name": "Quels symptômes indiquent un test pour le SRAS ?",
"position": 4,
"acceptedAnswer": {
"@type": "Answer",
"text": "Fièvre, toux, dyspnée et antécédents de voyage dans des zones à risque sont des indicateurs."
}
},
{
"@type": "Question",
"name": "Les radiographies sont-elles utiles pour le SRAS ?",
"position": 5,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, les radiographies thoraciques peuvent montrer des infiltrats pulmonaires caractéristiques."
}
},
{
"@type": "Question",
"name": "Quels sont les symptômes courants du SRAS ?",
"position": 6,
"acceptedAnswer": {
"@type": "Answer",
"text": "Fièvre, toux sèche, essoufflement, douleurs musculaires et fatigue sont fréquents."
}
},
{
"@type": "Question",
"name": "Le SRAS provoque-t-il des complications respiratoires ?",
"position": 7,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, il peut entraîner une pneumonie et une détresse respiratoire aiguë."
}
},
{
"@type": "Question",
"name": "Les symptômes du SRAS apparaissent-ils rapidement ?",
"position": 8,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les symptômes apparaissent généralement 2 à 7 jours après l'exposition au virus."
}
},
{
"@type": "Question",
"name": "Y a-t-il des symptômes gastro-intestinaux associés ?",
"position": 9,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, certains patients peuvent présenter des diarrhées ou des douleurs abdominales."
}
},
{
"@type": "Question",
"name": "Les symptômes varient-ils d'une personne à l'autre ?",
"position": 10,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, l'intensité et la combinaison des symptômes peuvent varier selon les individus."
}
},
{
"@type": "Question",
"name": "Comment prévenir la transmission du SRAS ?",
"position": 11,
"acceptedAnswer": {
"@type": "Answer",
"text": "Le lavage des mains, le port de masques et l'évitement des contacts étroits sont essentiels."
}
},
{
"@type": "Question",
"name": "Les vaccins contre le SRAS existent-ils ?",
"position": 12,
"acceptedAnswer": {
"@type": "Answer",
"text": "Actuellement, il n'existe pas de vaccin approuvé contre le SRAS."
}
},
{
"@type": "Question",
"name": "Quelles mesures de quarantaine sont recommandées ?",
"position": 13,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les personnes exposées doivent être mises en quarantaine pour éviter la propagation."
}
},
{
"@type": "Question",
"name": "Les voyages vers des zones à risque doivent-ils être évités ?",
"position": 14,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, il est conseillé d'éviter les voyages vers des zones où le SRAS est actif."
}
},
{
"@type": "Question",
"name": "Les établissements de santé doivent-ils être préparés ?",
"position": 15,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, les hôpitaux doivent avoir des protocoles pour gérer les cas suspects de SRAS."
}
},
{
"@type": "Question",
"name": "Quel est le traitement principal du SRAS ?",
"position": 16,
"acceptedAnswer": {
"@type": "Answer",
"text": "Il n'existe pas de traitement antiviral spécifique, le soutien respiratoire est essentiel."
}
},
{
"@type": "Question",
"name": "Les antibiotiques sont-ils efficaces contre le SRAS ?",
"position": 17,
"acceptedAnswer": {
"@type": "Answer",
"text": "Non, les antibiotiques ne sont pas efficaces car le SRAS est causé par un virus."
}
},
{
"@type": "Question",
"name": "Le traitement préventif est-il disponible pour le SRAS ?",
"position": 18,
"acceptedAnswer": {
"@type": "Answer",
"text": "Aucun traitement préventif spécifique n'est disponible, la prévention repose sur l'hygiène."
}
},
{
"@type": "Question",
"name": "Les corticostéroïdes sont-ils utilisés pour le SRAS ?",
"position": 19,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les corticostéroïdes peuvent être utilisés pour réduire l'inflammation dans certains cas."
}
},
{
"@type": "Question",
"name": "Le soutien respiratoire est-il crucial ?",
"position": 20,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, le soutien respiratoire est vital pour les patients présentant une détresse respiratoire."
}
},
{
"@type": "Question",
"name": "Quelles sont les complications possibles du SRAS ?",
"position": 21,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les complications incluent la pneumonie, l'insuffisance respiratoire et des lésions pulmonaires."
}
},
{
"@type": "Question",
"name": "Le SRAS peut-il entraîner des séquelles à long terme ?",
"position": 22,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, certains patients peuvent avoir des séquelles respiratoires persistantes après guérison."
}
},
{
"@type": "Question",
"name": "Les complications sont-elles plus fréquentes chez certains groupes ?",
"position": 23,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, les personnes âgées et celles avec des comorbidités sont plus à risque."
}
},
{
"@type": "Question",
"name": "Le SRAS peut-il causer des problèmes cardiaques ?",
"position": 24,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des études montrent que le SRAS peut affecter le cœur, entraînant des complications cardiaques."
}
},
{
"@type": "Question",
"name": "Les complications neurologiques sont-elles possibles ?",
"position": 25,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, des cas de complications neurologiques ont été rapportés chez certains patients atteints de SRAS."
}
},
{
"@type": "Question",
"name": "Qui est le plus à risque de développer le SRAS ?",
"position": 26,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les personnes âgées et celles avec des maladies chroniques sont plus à risque."
}
},
{
"@type": "Question",
"name": "Les travailleurs de la santé sont-ils plus exposés ?",
"position": 27,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, les travailleurs de la santé sont à risque accru en raison de leur exposition aux patients."
}
},
{
"@type": "Question",
"name": "Les voyages dans des zones à risque augmentent-ils le risque ?",
"position": 28,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, voyager dans des zones où le SRAS est présent augmente le risque d'infection."
}
},
{
"@type": "Question",
"name": "Les personnes immunodéprimées sont-elles plus vulnérables ?",
"position": 29,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, les personnes immunodéprimées ont un risque accru de développer des formes graves de la maladie."
}
},
{
"@type": "Question",
"name": "Le contact avec des animaux infectés est-il un facteur de risque ?",
"position": 30,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, le contact avec des animaux porteurs du virus peut augmenter le risque d'infection."
}
}
]
}
]
}
McGill University Health Centre, McGill Interdisciplinary Initiative in Infection and Immunity, and J.D. MacLean Centre for Tropical Diseases, McGill University, Montreal, Quebec, Canada (C.P.Y., M.S., M.L.).
McGill University Health Centre, McGill Interdisciplinary Initiative in Infection and Immunity, and J.D. MacLean Centre for Tropical Diseases, McGill University, Montreal, Quebec, Canada (C.P.Y., M.S., M.L.).
Foundation of Innovative New Diagnostics (FIND), Geneva, Switzerland, and Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom (S.D.).
McGill Interdisciplinary Initiative in Infection and Immunity, School of Population and Global Health, McGill University, and Montreal Children's Hospital, Montreal, Quebec, Canada (J.P.).
McGill University Health Centre, McGill Interdisciplinary Initiative in Infection and Immunity, and J.D. MacLean Centre for Tropical Diseases, McGill University, Montreal, Quebec, Canada (C.P.Y., M.S., M.L.).
Automatic polysomnography analysis can be leveraged to shorten scoring times, reduce associated costs, and ultimately improve the overall diagnosis of sleep disorders. Multiple and diverse strategies ...
Morningness-eveningness preference, also known as chronotype, is the tendency for a person to sleep during certain hours of the day and is broadly categorised into morning and evening types. In-labora...
Children with genetic skeletal disorders have variable conditions that can lead to sleep-disordered breathing, and polysomnography is the gold standard for diagnosing this condition. We aimed to revie...
The importance polysomnography (PSG) in the diagnosis and treatment process of insomnia disorder (ID) remains highly disputed. This review summarises the state of the science regarding PSG indications...
Sleep disorders in patients with autoimmune encephalitis (AE) are increasingly reported. Early recognition and treatment have significant importance regarding the potential of sleep disorders' effect ...
Seventeen patients with diagnosed AE and acute or subacute onset sleep complaints who underwent video-electroencephalography-PSG recordings in our tertiary center were investigated....
The mean age was 50, with eight females and nine males. The detected antibodies were against leucine-rich glioma-inactivated 1(LGI-1) in 6, anti-contactin-associated protein-2(CASPR2) in 3, voltage-ga...
Sleep disorders are frequent and essential components of AEs. Systematic clinical questionnaires and routine PSG assessments would significantly impact the correct diagnosis and proper treatment of SR...
To characterize 1) the relationship between laxative use and objective sleep metrics, and 2) the relationship between laxative use and self-reported insomnia symptoms in a convenience sample of middle...
We cross-sectionally analyzed first-night diagnostic in-laboratory polysomnography data for 2946 patients over the age of 40 (mean age 60.5 years; 48.3% male). Laxative use and medical comorbidities w...
After adjusting for age, sex, body mass index, total recording time, and relevant comorbidities, laxative users had a 7.1% lower sleep efficiency (...
Laxative use is associated with impairments in objective sleep continuity. Patients using laxatives were also at greater odds of reporting insomnia symptoms....
We provide an umbrella review of the reported polysomnographic changes in patients with neuropsychiatric diseases compared with healthy controls....
An electronic literature search was conducted in EMBASE, MEDLINE, All EBM databases, CINAHL, and PsycINFO. Meta-analyses of case-control studies investigating the polysomnographic changes in patients ...
We identified 27 articles, including 465 case-control studies in 27 neuropsychiatric diseases. The levels of evidence of polysomnographic changes in neuropsychiatric diseases were highly suggestive fo...
The credibility of evidence for sleep characteristics in 27 neuropsychiatric diseases varied across polysomnographic variables and diseases. When considering the patterns of altered PSG variables, no ...
Due to potential issues, several sleep laboratories conduct sleep bruxism diagnosis without the use of a camera, instead relying mostly on electromyographic monitoring. The purpose of the study was to...
To provide an updated comparison of apnea-hypopnea index (AHI), oxygen desaturation index (ODI), respiratory disturbance index (RDI), oxygen saturation (O...
Primary studies were identified through PubMed, Scopus, CINAHL, and Cochrane....
A systematic review was performed by searching databases from inception through August 2021. Only studies examining simultaneous monitoring of a PSSD and PSG were included. Respiratory indices AHI, OD...
A total of 24 studies (N = 1644 patients) were included. The mean age was 49.5 ± 12.0 (range = 13-92), mean body mass index (BMI) was 30.4 ± 5.7 (range = 17-87), and 69.4% were male. Meta-correlation ...
Respiratory indices correlate strongly between PSSD and PSG, which is further supported by meta-regressions results. PSSD might be a valuable cost and time-saving OSA screening tool....
It is estimated that half of Canadians have insufficient sleep, which over time is associated with poor physical and mental health. Currently, the only publicly funded option for the diagnosis of slee...
We performed a systematic literature search of the clinical evidence to identify diagnostic accuracy, test failures and subjective measures of patient preferences. We assessed the risk of bias of each...
We included 10 studies that reported on diagnostic accuracy and found level 2 polysomnography had sensitivity ranging between 0.76-1.0 and specificity ranging between 0.40-1.0 (GRADE: Moderate to Very...
Level 2 polysomnography may have good test performance for adults and children, with adequate diagnostic accuracy, compared with level 1 polysomnography. The economic analyses showed that level 2 poly...